Thermodynamic assessment of the Ni-Sb binary system |
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Authors: | CAO Zhanmin TAKADU Yoshikazu OHNUMA Ikuo KAINUMA Ryosuke ZHU Hongmin ISHIDA Kiyohito |
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Affiliation: | 1. School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China 2. Department of Materials Science,Graduate School of Engineering,Tohoku University,Sendai 980-8578,Japan |
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Abstract: | The Ni-Sb binary alloy system was thermodynamically assessed using CALPHAD approach in this article.Excess Gibbs energies of solution phases,liquid and fcc phases,were formulated using the Redlich-Kister expression.The intermediate phases were modeled by the sublattice model with (Ni,Va)0.5(Ni,Sb)0.25(Ni)0.25 for Ni3Sb_HT phase and (Ni,Va)0.3333(Sb)0.3333(Ni,Va)0.3333 for NiSb phase.The other phases including Ni3Sb,Ni7Sb3,and NiSb2 were treated as stoichiometric compound owing to their narrow composition ranges.Based on the reported thermodynamic properties and phase diagram data,the thermodynamic parameters of these phases were optimized,and the obtained values can reproduce the available experimental data well. |
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Keywords: | Ni-Sb binary system thermodynamic assessment CALPHAD phase diagram |
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